[Libreoffice-bugs] [Bug 131213] New: Pasting non-printable Unicode character into LibreOffice makes it unusable

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=131213

            Bug ID: 131213
           Summary: Pasting non-printable Unicode character into
                    LibreOffice makes it unusable
           Product: LibreOffice
           Version: 6.4.1.2 release
          Hardware: x86-64 (AMD64)
                OS: Mac OS X (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: LibreOffice
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: github.ds at web.de

Description:
I got a PDF document which looks fine visually, but copying text out of it
results in having unprintable Unicode characters in the clipboard, for example
U+10FC1F, U+10FC10 or U+10FC01. Pasting such a character into LibrOffice leads
to the application locking up for several seconds while the CPU goes up to
100%. This again happens on every interaction with the text view. LibreOffice
gets unusable.

The larger the amount of text copied over, the longer LibreOffice locks up and
doesn't react.

Here's a string, you should be able to test this with: 􏰟􏰐􏰁􏰄􏰌􏰂􏰅􏰐􏰂

I could reproduce this with LibreOffice Writer, Calc and Impress. I assume this
is due to a bug in some shared component.

Steps to Reproduce:
1. Copy this string into any text field of Writer, Calc or Impress: 􏰟􏰐􏰁􏰄􏰌􏰂􏰅􏰐􏰂

Actual Results:
The GUI locks up for several seconds and the CPU goes up to 100%. This happend
on every interaction with the pasted string.

Expected Results:
The GUI does not lock up.


Reproducible: Always


User Profile Reset: Yes



Additional Info:
Version: 6.4.1.2
Build ID: 4d224e95b98b138af42a64d84056446d09082932
CPU threads: 4; OS: Mac OS X 10.14.6; UI render: default; VCL: osx; 
Locale: de-DE (de_DE.UTF-8); UI-Language: en-US
Calc: threaded

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